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Is putting a div inside an anchor ever correct?
...flow elements. Otherwise, only phrasing elements (read default=inline) are allowed. Thus, if the a is in a form or div, it can contain a div, but inside a p, it can't. See w3.org/TR/html-markup/terminology.html
– Patanjali
Oct 24 '16 at 1:00
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... prot opt source destination
Chain RH-Firewall-1-INPUT (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 ...
How do you use the ? : (conditional) operator in JavaScript?
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This is a one-line shorthand for an if-else statement. It's called the conditional operator.1
Here is an example of code that could be shortened with the conditional operator:
var userType;
if (userIsYoungerThan18) {
userType = "Minor";
} else {
userType = "Adult";
}
if (userIsY...
Making an array of integers in iOS
...rays are such a hassle for anything but trivial, one-off use that it's actually less trouble to wrap any arrays you plan on keeping around as NSArrays of NSNumber.
– Chuck
Jul 27 '10 at 1:58
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Replace a character at a specific index in a string?
I'm trying to replace a character at a specific index in a string.
8 Answers
8
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Converting Python dict to kwargs?
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Here is a complete example showing how to use the ** operator to pass values from a dictionary as keyword arguments.
>>> def f(x=2):
... print(x)
...
>>> new_x = {'x': 4}
>>> f() # default value x=2
2
&...
Analyze audio using Fast Fourier Transform
...efficients you get out will be imaginary numbers even though your input is all real values. In order to get the amount of power in each frequency, you need to calculate the magnitude of the FFT coefficient for each frequency. This is not just the real component of the coefficient, you need to calcul...
SQL Joins Vs SQL Subqueries (Performance)?
...explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (WHERE x=Y OR x=Z OR...).
As with ALL THINGS SQL though, your mileage may vary. The speed will depend a lot on indexes (do you have indexes on both ID column...
How do I sort a list of dictionaries by a value of the dictionary?
...reverse() statement. Otherwise you can define a comparison like cmp=lambda x,y: - cmp(x['name'],y['name']).
– Mario F
Oct 13 '09 at 7:14
3
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Unix shell script find out which directory the script file resides?
Basically I need to run the script with paths related to the shell script file location, how can I change the current directory to the same directory as where the script file resides?
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